Chrono Crusade

Her name is Sister Rosette, an exorcist of the Magdala Order. In the year 1928, in New York City, America. It is still night, adorned by darkness. Shortly after the end of World War I, the American economy began unprecedented growth. However, this overly rapid development attracted some uninvited guests. Anomalies invisible to the human eye were stirring in the darkness. Sister Rosette of the Magdala Order, who specializes in exorcism, and her young assistant Chrono are experts known as "Exorcists." The highly skilled duo prevents demons that inhabit various objects from invading the United States, embarking on countless adventures. Though occasionally, while resolving demon-related issues, they cause even greater damage to their surroundings. Rosette has been searching for her younger brother Joshua, who was separated from her during a demonic incident in their childhood. To this end, she entered the order and underwent training to become an exorcist. However, there is a major secret between her and Chrono: Chrono's true identity is a demon bound to Rosette by a "Pocket Watch Contract." In urgent situations, Rosette breaks the seal, allowing Chrono to unleash his powerful abilities. But the cost is that Rosette must consume her own "soul," meaning her lifespan will be shortened. An absolute bond of trust has been established between the human and the demon. But can Rosette survive long enough to reunite with her brother Joshua?